CN107407157A - For filling the anticorrosion plug of attachment openings, and include the system of the plug - Google Patents
For filling the anticorrosion plug of attachment openings, and include the system of the plug Download PDFInfo
- Publication number
- CN107407157A CN107407157A CN201680015484.4A CN201680015484A CN107407157A CN 107407157 A CN107407157 A CN 107407157A CN 201680015484 A CN201680015484 A CN 201680015484A CN 107407157 A CN107407157 A CN 107407157A
- Authority
- CN
- China
- Prior art keywords
- plug
- attachment openings
- blind hole
- top surface
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005489 elastic deformation Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000593 degrading effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/148—Blades with variable camber, e.g. by ejection of fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/95—Preventing corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/501—Elasticity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/95—Constructional details of connections not covered for in other groups of this subclass with markings, colours, indicators or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The present invention relates to a kind of plug (50) for being used to prevent that attachment openings (22) from corroding.The plug includes：Lower surface (51), it includes being used to receive the opening (60) on the head (27) of tension equipment (23)；Top surface (52)；And the substantial cylindrical side wall (53) extended between lower surface (51) and top surface (52).The side wall (53) includes the first side region (66), it is characterised in that：Plug (50) is formed by elastic deformation material, and the diameter (Db) when having static, and with the elasticity that the plug can be made to block and be maintained in the top (22b) of attachment openings (22) via elastic deformation；And top surface (52) includes at least one first blind hole (64,94), it is shaped such that when plug (50) is caused spine to appear in the elastic deformation between the top surface (52) of plug (50) and the first side region (66) by one kind, and the spine is removed by the elastic deformation of first blind hole (64,94).
Description
Technical field
The field of the invention is related to the field of turbine guiding blade, and particularly guides the blade of blade.
Background technology
Fig. 1 schematically shows a kind of double-flow turbine 10 for aero propulsion.It includes the fan of delivery air
11, the core for being referred to as the primary flow PF air-flow is injected into compressor 12, and compressor 12 supplies driving fan
11 turbine.
After the coronal for the fixation blade for being disposed in the downstream of fan 11 has been had already passed through, it is referred to as secondary flow SF gas
The periphery of stream is used for the part being injected into air, to provide a part of thrust of turbine 10.It is referred to as guiding oar
The coronal (the also referred to as acronym OGV of " outlets direct blade ") of leaf 14 can put down the air-flow in the exit of fan 11
Directly, while by loss limitation to the limit.
Fig. 2 a schematically show a kind of blade 20 for the guiding blade 14 for significantly including main body 30 and root 21, and
Fig. 2 b are the enlarged drawings along the root 21 of the section A-A blade 20.The blade of guiding blade 14 is intended to be fixed on wheel hub
On 15.Therefore, the root 21 of blade 20 includes two attachment openings 22 on 30 each side of main body, can receive for machinery
Ground link blade 20 arrives the tension equipment of wheel hub 15.Fig. 3 shows that attachment openings 22 are positioned in tension equipment 23.
Each attachment openings 22 include：
- in the bottom cylindrical portion 22a that appears of level of the lower surface 25 of the root 21 of blade 20, it is applied to
The bar 24 of tension equipment 23 passes through,
- in the top cylindrical portion 22b that appears of level of the top surface 26 of root 21, it is applied to tension equipment
23 head 27 passes through,
- the shoulder 28 between top 22b and bottom 22a so that top 22b diameter Ds is more straight than more than bottom 22a
Footpath Di.
In addition, ring or cup portion 29 be used between shoulder 28 and the head 27 of tension equipment 23 in the manner shown in fig. 3 by
It is positioned in the 22b of top.Cup portion 29 can avoid tension equipment 23 from shoulder 28 is worn (matting) or is left a trace.
However, the level in attachment openings 22 has been observed that corrosion, because at the top of the attachment openings 22
Ponding in 22b be present.
First solution of the problem is to re-form attachment openings, then may placed slot in attachment openings
In position.However, once having been completed these reparations, water can be stuck in the top of attachment openings again, so as to again
Cause the corrosion of attachment openings.In addition, continuous repair ultimately results in weakening root of blade, this influences its life-span.
Second of solution is including by a kind of silicon resin base compound, (acronym is RTV " room temperature vulcanization " silicon
Resin) filling attachment openings top (once the appropriate location of blade on wheel hub), to close the attachment openings.However,
The use of the silicon resin base compound needs the drying time grown very much, therefore causes the increased periods of installation operation.Using for
The silicones of filling attachment openings also increases the take-down time, especially during maintenance operation, because being necessary to remove the change
Compound simultaneously clears up the attachment openings before reinstalling.
The third solution is described in FRn ° 1454953 of patent application.According to the 3rd solution and reference
Fig. 4 a and 4b, seal 31 are used for the top for filling attachment openings 22 after the blade 20 of installation guiding blade 14 on wheel hub 15
22b.Seal 31 includes plug 32 and suitable cup portion 35.The head of tension equipment is intended to be placed in cup portion 35, and is inserted
First 32 are covered.In addition, cup portion 35 is intended to be securely maintained in attachment openings 22 by rigging pilotage 36.By being assemblied in one
Rise and slide into the ledge 33 of plug 32 in port 34, manufactured port 34 can guide slotting in the side wall of cup portion 35
First 32.The male-female system may insure being properly positioned in attachment openings 22 of plug 32.
But this seal has the disadvantage in that：
- by forming port in the cup portion, and by using rigging pilotage equip them, it is necessary to change usually used
Cup portion,
- two perforation must be implemented in the horizontal of attachment openings bottom, so as to which cup portion is maintained at into attachment by rigging pilotage
In the top of opening,
- contact surface the very little between plug and the external diameter of attachment openings, this can make water penetration to around plug,
And the disengaging of plug can be caused in the operating process of turbine.
The content of the invention
In this context, the present invention is intended to provide what a kind of attachment openings for being used to avoid guiding blade root were corroded
Solution, this implements very simple and quick, and need not change attachment opening or cup portion.
According in a first aspect, present invention is accordingly directed to it is a kind of prevent attachment openings corrode plug, including：
Lower surface, it includes being used for the opening for receiving tension equipment head,
Top surface,
The substantial cylindrical side wall in axial direction extended between lower surface and top surface, the side wall 25 are wrapped
Include the first side region.
In addition, plug is formed by elastic deformation material, and external diameter when static and elasticity can make the plug
Block and be maintained at by elastic deformation in attachment openings.
In addition, top surface includes at least the first blind hole, the first blind hole is shaped such that when plug is by elastic deformation,
The elastic deformation causes occur spine between the top surface of plug and the first side region, the elastic deformation of first blind hole
Remove the spine.
Plug according to a first aspect of the present invention can solve the above problems.
In fact, the plug is made up of a kind of elastic deformation material of such as elastomer, the elastic deformation material can lead to
Elastic deformation is crossed quickly and easily to be placed on the plug in the attachment openings of appropriate size.Size is slightly larger during by selecting static
In the plug of attachment openings, plug, which is extruded, to be inserted into attachment openings, and then plug loses tension force after pickup.Plug is then
Completely enclosed attachment openings, water is prevented in its horizontal infiltration, it is from being corroded so as to keep away." static " refers to that plug does not become
State during shape.In addition, used size and material can avoid the disengaging of the plug in the operation of turbine.
In addition, the first blind hole can remove the ridge of the material formed when in appropriate location of the plug in attachment openings
Portion.In addition, the first blind hole can remove plug by using appropriate removing tool, removing tool causes plug to be easy to remove
With it is interchangeable.
Finally, it is not necessary to change attachment openings and cup portion.In fact, the plug being inserted into attachment openings is enough to close institute
State attachment openings.
Plug according to a first aspect of the present invention, individually consider or consider technically to be possible to combine according to it, it is described
Plug can have one or more following characteristics.
According to a non-limiting embodiment, the first blind hole is included relative to the blind portion of the inclined extreme value of the first side region
(extremal blind portion)。
The structure causes when plug is by between a kind of top surface for causing spine to appear in plug and the first side region
Elastic deformation when, the spine is removed by the deformation of first blind hole.
According to a non-limiting embodiment, the blind portion of extreme value is included in 80 substantially relative to the inclination angle of the first side region
To between 100 degree, 90 degree are advantageously.
This is the optimal placement for removing the spine of plug material.
According to a non-limiting example, first blind hole includes appearing extreme value portion (emerging extremal
Portion), the extreme value portion that appears has slit shape.
Therefore, by the rotation of removing tool, it is introduced in and appears the end of the removing tool in extreme value portion and directly fill
It is fitted on the blind extreme value portion in the first hole.It can be pointed out that to appearing extreme value portion and be advantageously oriented at attachment by this way and open
In mouthful so that when blind extreme value portion is wedged in the end of removing tool, what plug can be removed, the instrument is not hindered by blade.It is real
On border, then the instrument only has the available single degree of freedom：Rotation of the instrument only in the plane parallel with blade is possible
's.This can be avoided blade from being damaged or do not form the obstacle for removing plug.
According to a non-limiting embodiment, top surface includes the second blind hole, second blind hole and the first blind hole
Diametrically.
Second blind hole is so so that when plug is by a kind of the second side for causing spine to appear in top surface and side wall
During elastic deformation between region, the spine is removed by the deformation of second blind hole, second side region with
The first side wall is diametrically.Therefore, the material spine occurred is inserted after plug in attachment openings to be removed in the both sides of plug.
According to a non-limiting embodiment, the first blind hole is positioned in the center of top surface, and including below
It is the cylindrical part that appears of blind cylindrical part, the diameter in blind extreme value portion is more than the diameter for appearing extreme value portion.
Therefore, when the lower surface of plug is parallel with top surface, because it is symmetrical, plug can be according to any orientation quilt
It is positioned in attachment openings.The structure can avoid any placement mistake during installation plug is to attachment openings.Due to
The diameter in blind extreme value portion, which is more than, appears the diameter in extreme value portion, and the wedging of the end of removing tool in blind extreme value portion is possible.
It is in addition, very simple for the mould production for manufacturing this plug.
According to a non-limiting embodiment, side wall includes a series of circumferences vertical with the axial direction of the plug
Undulation.
The undulation in plug sidewalls be present can improve holding and adhesion of the plug in attachment openings.In addition, the ripple
Shape fluctuating can avoid the material spine that may occur in which when plug is held tightly in attachment openings.
According to a non-limiting embodiment, form the material of plug and have and be included in substantially between 30 to 80 shore
Hardness.
Therefore, plug has hardness so that the plug is not destroyed by environmental stress, especially in the operation of turbine
Cheng Zhong.During its removal from attachment openings, the hardness of the plug can also make it not be tensioned equipment or removed instrument
Destroy or tear.Due to this plug, the life-span of the life-span of tension equipment and the part including the attachment openings adds.
According to second aspect, the present invention relates to a kind of sealing system, including：
The attachment openings of root of blade, the attachment openings include top,
According to the plug of first aspect.
Root also refers to the inner radial platform or radially outer platform of blade 20, when it is for suitable in turbine 10
When in position.
Plug have with the basic complementary outer shape of the top shapes of attachment openings, and with it is static when plug it is outer
Portion's size is more than the size at the top.
This system can realize close installation of the plug in attachment openings, and attachment openings are penetrated into so as to avoid water
It is interior, and so as to avoid the corrosion of tension equipment or the attachment openings.
According to a non-limiting embodiment, the top surface of plug tilts relative to lower surface so that works as plug
When being placed in attachment openings, the top surface of plug is in the geometric continuity of root of blade.
The advantages of this asymmetric geometry is to avoid any disturbance in the horizontal aerodynamic flow of root of blade, plug
Top surface is in the horizontal extension of root of blade.
According to a non-limiting embodiment, the top surface of plug includes to be placed plug according to precalculated position
Visual indicia at the top of the attachment openings.
Therefore, because plug is asymmetric, visual indicia can aid in attachment openings correctly placing idle plug, and
So as to avoid any mistake in installation process.In one embodiment, visual indicia includes to be put with indicating plug
The arrow in the direction put, such as arrow point to the direction of engine front.It is hereby ensured that in blade root for this visual indicia
Good aerodynamic flow in portion's level.
According to a non-limiting embodiment, the system includes tension equipment, and it includes：
The bar being placed in attachment openings bottom is intended to,
It is intended in being positioned at the top of attachment openings and between the base and top by the head of shoulder obstruction, and
The opening formed in the lower surface of plug is with the basic complementary geometry in head with tension equipment.
While avoiding the plug to rotate in the operating process of turbine, due to being somewhat tensioned installation, this opening can
Ensure to keep the tension equipment in plug lower surface.In fact, in its operating process, the turbine, which generates, to be drawn
Lead the vibration substantially propagated in the level of blade.In addition, the opening can also avoid the spine of material in open horizontal.
According to a non-limiting embodiment, the system includes being applied to be maintained at attachment by tension equipment head
Cup portion on the shoulder of opening, and wherein：
The bar of tension equipment is positioned in the bottom of attachment openings,
Cup portion is maintained on the shoulder of attachment openings,
The head of tension equipment is positioned and is blocked in the top of attachment openings against cup portion,
Plug covers the head of tension equipment,
The lower surface and cup portion of plug are every a non-zero distance.
The cup portion being positioned between tension equipment and the shoulder of the attachment openings in the blind drilling of attachment openings can
To avoid the abrasion of part or leave a trace.In fact, when operated, what turbine generation was substantially propagated in attachment openings shakes
It is dynamic, and friction area is produced between tension equipment and shoulder.Cup portion can avoid the friction, so as to increase the life-span of blade.
This system can protect the attachment openings, cup portion and tension equipment from all outside erosions, such as take in
Small pieces gravel, sand etc..In addition, the system can preserve the lubrication between the bar for being placed on tension equipment and attachment openings bottom
Grease.In addition, Existential Space can avoid the formation of the spine of the material of plug between the lower surface and cup portion of plug.
Finally, according to the third aspect, the present invention relates to a kind of blade of the guiding blade including root, described of blade
Portion includes the sealing system according to second aspect.
According to following description and referring to the drawings, the present invention, the list of accompanying drawing given below are better understood with.
Brief description of the drawings
These accompanying drawings are presented merely for indicative purpose and without limitation.
The Fig. 1 having been described above schematically shows a kind of double-flow turbine including guiding blade.
Fig. 2 a having been described above schematically show a kind of blade of guiding blade shown in Fig. 1.
Fig. 2 b having been described above are the enlarged drawings of root of blade shown in Fig. 2 a according to sectional view, and the root is attached including two
Connect opening.
The Fig. 3 having been described above is the enlarged drawing of the attachment openings of the root of blade shown in Fig. 2 b, is set wherein being placed with tensioning
Standby and cup portion.
Fig. 4 a having been described above are a kind of prior art seals for being intended to be accommodated in attachment openings shown in Fig. 2 b
Decomposition view.
Fig. 4 b having been described above are the seals being assembled shown in Fig. 4 a.
Fig. 5 a are the top views of Fig. 2 b roots of blade, and a kind of including according to the close of first embodiment of the invention plug
The top view of envelope system.
Fig. 5 b are the side views of Fig. 5 a elements.
Fig. 6 shows the lower surface of the plug of Fig. 5 a and 5b systems.
Fig. 7 shows the top surface of Fig. 6 plugs.
Fig. 8 a show the Fig. 5 a and 5b that are positioned in Fig. 2 b attachment openings sealing system.
Fig. 8 b are the enlarged drawings of a part for plug shown in Fig. 8 a, and it is formed spine by elastic deformation.
Fig. 8 c show the part of plug shown in Fig. 8 b, and spine has been eliminated.
Fig. 9 a, 9b and 9c schematically illustrate the step of extracting Fig. 5 a plugs by removing tool.
Figure 10 a are the side views according to the plug of second embodiment of the invention.
Figure 10 b show a kind of sealing system of the plug including Figure 10 a, and plug is positioned in Fig. 2 b attachment openings
In.
Figure 11 represents a kind of sealing system of the plug including according to third embodiment of the invention, and plug is positioned in figure
In 2b attachment openings.
Figure 12 shows the top surface of the plug according to four embodiment of the invention.
Figure 13 schematically shows a kind of sealing system for including Figure 12 plugs, and the attachment that plug is positioned in Fig. 2 b is opened
In mouthful.
Embodiment
Unless otherwise indicated, the similar elements in different accompanying drawings have single reference.
The present invention relates to a kind of plug for being used to prevent that the attachment openings for guiding blade root from corroding, such as Fig. 2 b are first
The attachment openings 22 of the root 21 of preceding description and the blade 20 shown.Fig. 5 a and 5b is shown in a perspective fashion according to two visual angles
The root 21：The top surface 26 of root 21 is visible in fig 5 a, and the lower surface 25 of root 21 is visible in figure 5b.Such as
Previously explained, root 21 includes two attachment openings 22 on 30 each side of main body of blade 20.Each attachment openings
22 are intended to receive tension equipment and cup portion, such as tension equipment 23 and cup portion 29 produce (evoked) and shown in Fig. 3 in advance.Institute
State tension equipment 23 and the cup portion 29 is visible in figure 5b.In addition, each attachment openings 22 are included in the level of lower surface 25
The cylindrical bottom portion 22a appeared, and the cylinder-shaped top 22b appeared in the level of top surface 26.Top 22b has and bottom
22a diameter Di compares bigger diameter Ds, and so as to form shoulder 28 between bottom 25 and top 26, the shoulder 28 is used as cup
Portion 29 and the support member on the head of tension equipment 23 27.
Fig. 5 a and 5b are also shown for the plug 50 according to first embodiment.The plug 50 is in figs. 6 and 7 more accurately
Represent, wherein respectively it is seen that the lower surface 51 and top surface 52 of the plug 50.Plug 50 has and attachment openings
The basic complementary outer shape of 22 top 22b shape, and it is static when it has compared with the size of the top 22b more
Big external dimensions.Therefore, plug 50 has the normally shape of substantially cylindrical, and in axial direction X extends.In other words,
Plug 50 includes the cylindrical side wall on the whole that in axial direction X extends between its lower surface 51 and its top surface 52
53。
However, the lower surface 51 and top surface 52 of plug 50 are slightly slanted relative to one another.In other words, plug 50
Lower surface 51 and top surface 52 it is not parallel each other.This structure is favourable, because the bottom of the root 21 of blade 20
Surface 25 is not fully parallel relative to each other with shoulder 28.The top surface 52 of plug 50 is placed on to the root 21 of blade 20
Top surface 26 extension in, as seen in Figure 8 a, the level stream of top surface 26 in the root 21 of blade 20 can be avoided
Dynamic air-flow is disturbed by geometric discontinuity.
It should be noted that in other embodiments, lower surface 51 and top surface 52 are substantially parallel toward each other,
Compromise the quality of the aerodynamic flow in secondary airflow.However, these structures can limit plug 50 at the top of attachment openings 22
The risk of False orientation in 22b.
In addition, the top surface 52 of plug 50 includes plug 50 being placed on into attachment openings 22 according to precalculated position
Visual indicia 54 in the 22b of top.In fact, when the top surface 52 and asymmetric lower surface 51 of plug 50, vision mark
Note 54 can help plug 50 being properly placed in the top 22b of attachment openings 22, so as to avoid in installation process
Any mistake.For example, the front of turbine or the back side are shown with the end of the arrow represented on the top surface 52 of plug 50.
It is pointed out that this visual indicia 54 is selectable.
In addition, plug 50 is made up of elastic deformation material, such as elastomer, the elastic deformation material can make plug attached
Connect in the top 22b of opening 22 and closely kept.In fact, in inactive state, that is to say, that should not by outside in plug 50
In the state of power, the diameter Db of plug 50 is slightly larger than the top 22b of attachment openings 22 diameter Ds.Therefore, it is necessary to compress
Plug 50 is to be introduced into the top 22b of attachment openings 22.When plug 50 is placed in the top 22b of attachment openings 22
When, it attempts to lose tension force and is squeezed on the wall of attachment openings 22, prevents water in the infiltration of ambient of plug 50.In plug 50 and attached
The contact surface connect between the top 22b of opening 22 wall is optimal.It is pointed out that the material of plug 50 is not formed also not
It is permeable, introduce water in attachment openings 22 to avoid passing through plug 50.
In addition, plug 50 is included in manufactured opening 60 in its lower surface 51.Opening 60 is intended to receive tension equipment 23
Head 27.As shown in Figure 6, opening 60 has the marking 61, and the marking 61 is intended to hug the shape on the head 27 of tension equipment 23.Change
Sentence is talked about, the geometric figure and the geometry on the head 27 of tension equipment 23 of manufactured opening 60 in the lower surface 51 of plug 50
Figure is substantially complementary.Therefore, plug 50 ideally assembles, and is advantageously assemblied in tensioning according to the installation situation being somewhat tensioned
On the head 27 of equipment 23, until the extreme value portion against the head 27.It is ensured that plug is on the head of tension equipment 23
Optimal holding on 27, avoid rotation or motion of the plug 50 in turbine operation.In addition, this structure can be kept away
The spine for exempting from material may occur in the installation including plug 50, and the opening 60 in its lower surface 51 will not be set with tensioning
Standby 23 head 27 is complementary.
It should be noted that in other embodiments, opening 60 does not simultaneously have the marking 61：Opening 60 is, for example, cylinder
Shape.Then the mould for manufacturing plug 50 is simplified.
In addition, plug 50 is included in the annular part (roundness) 68 between top surface 52 and side wall 52, such as scheme
7 is visible with 8a.In addition, plug 50 is included in and is made on the top surface 52 of plug 50 and the He of the first blind hole 64 diametrically
Second blind hole 64 '.Blind hole 64,64 ' is used to eliminate the material spine that can be appeared in the level of circular piece 68 on plug 50, more accurately
Ground is in the free space between circular piece 68 and the top 22b of attachment openings 22 circumference.There is provided free space in the point can
To guide spine, to avoid that any excess stock of aerodynamic flow scrambling can be caused in secondary airflow.
First blind hole 64 has following shape so that when plug 50 is by elastic deformation, the elastic deformation causes spine
Between the first side region 66 for appearing in top surface 52 and the plug 50 close to first blind hole 64 positioning, the spine leads to
The elastic deformation for crossing first blind hole 64 is removed.Similarly, the second blind hole 64 ' has following shape so that when plug 50
During by elastic deformation, the elastic deformation causes spine to appear in top surface 52 and close to second blind hole 64 ' positioning
Between second side region 66 ' of plug 50, the spine is removed by the elastic deformation of second blind hole 64 '.
More accurately, reference picture 8a, the first blind hole 64 are included on top surface 52 and appear extreme value portion 80, and blind pole
Value portion 81.Appear extreme value portion 80 and the first side region 66 of plug 50 extends parallel to.On the contrary, blind extreme value portion 81 is relative to first
Side region 66 and tilted with the direction of the first side region 66, there is substantially equal to 90 degree of the first inclination alpha.First blind hole 64 because
This defines the first material hook 82, and its Part I 88 extends along the first side region 66, and top of the Part II 89 along plug
Surface 52 extends.When the first material hook 82, which is deformed, forms spine in the infall of Part I 88 and Part II 89,
Part II 89 is pivoted with the direction of the lower surface 51 of plug 50, is entered in the first blind hole 64.Therefore spine is eliminated.
Similarly, reference picture 8a, the second blind hole 64 ' are included on top surface 52 and appear extreme value portion 80 ', and blind pole
Value portion 81 '.Appear extreme value portion 80 ' and the second side region 66 ' of plug 50 extends parallel to.On the contrary, blind extreme value portion 81 ' relative to
Second side region 66 ' is simultaneously tilted with the direction of the second side region 66 ', has substantially equal to 90 degree of the second inclination alpha '.Second is blind
Hole 64 ' therefore the second material hook 82 ' is defined, its Part I 88 ' extends along the second side region 66 ', and the edge of Part II 89 '
The top surface 52 of plug 50 extends.On Fig. 8 b, when the second material hook 82 ' is deformed in Part I 88 ' and second
Divide 89 ' infall to form ridge to enter in the second blind hole 64 ', as shown in Figure 8 c.Therefore spine 95 is eliminated.
It is noted that in the embodiment represented by Fig. 8 a, the first blind hole 64 and the second blind hole 64 ' basic footpath each other
To relative：First blind hole 64 and the second blind hole 64 ' are along central symmetry axis X almost symmetries and the angle with 180 degree.Material spine
Therefore it is removed on the both sides of plug 50.
In addition, blind hole 64,64 ' is used to remove plug 50 via removing tool 90 (as shown in Fig. 9 a, 9b and 9c).In order to from
The top 22b of attachment openings 22 removes plug 50, and removing tool 90 is inserted into the appearing in extreme value portion of blind hole 64,64 ', and wedges
In blind extreme value portion 81,81 ', as shown in figure 9b.Then the rotation of removing tool 90 can remove plug 50.As Fig. 7 can be seen
Go out, it is flute profile to appear extreme value portion 80,80 '.This shape can be properly positioned the end (spiral shell of such as flat blade of removing tool
Silk knife), therefore the placement in blind extreme value portion 81,81 ' is easy to position, consequently facilitating the removal of plug 50.In addition, pass through blind hole
64th, 64 ' structure, removing tool 90 only have the available single degree of freedom.Therefore, by the way that plug 50 is placed as follows
In attachment openings 22 so that the main body 30 of slit and blade 20 vertically extends, removal of the removing tool 90 in plug 50
It is only capable of implementing rotation in the plane parallel to the main body 30 of blade 20 in journey.Therefore, the main body 30 of blade 22 does not form plug
50 obstacles removed, and be not present and be risk of damage to.
It is possible to note that in other embodiments, the first and/or second blind hole 64,64 ' appears extreme value part
80th, 80 ' appear the level of end at it and have the shape different from slit, such as cylindrical shape or circular arc.In other embodiment party
In formula, plug 50 has greater number of blind hole 64,64 ', such as 3 or 4 on its top surface 52, so as to eliminate in plug
The spine occurred in the diverse location of 50 side wall 53.
In other embodiments, the first blind hole 64 and/or the second blind hole 64 ' appear extreme value portion 80,80 ' and blind extreme value
Portion 81,81 ' is in mutual continuity, that is to say, that along identical and unique inclined orientation.It is important that the inclined angle
Degree can use removing tool 90 enough lever arms is removed plug 50, and can make the first blind hole 64 and/or the second blind hole
64 ' deformations, to absorb potential spine.It is equally important that the structure of the first blind hole 64 and the second blind hole 64 ' is simple, so as to keep away
Exempt to make the production of plug more complicated.
Fig. 9 shows that a kind of plug 50 has the embodiment of continuous undulating fluctuating 92 in its side wall 53, described wavy
Fluctuating 92 is to week and the axial direction X basically perpendicular to the plug 50.This undulation can improve plug 50 and exist
Holding and adhesion in the top 22b of attachment openings 22.Figure 10 shows that plug 50 is suitable in the top 22b of attachment openings 22
Work as position.
It is pointed out that the quantity of undulation 92 is different according to many embodiments, for example, according to plug 50
Size.
Figure 11 is represented in the appropriate location in the top 22b of attachment openings 22, according to the another of the plug 50 of the present invention
One embodiment.The top surface 52 of the plug 50 is bent.This structure can avoid plug 50 on the top of attachment openings 22
Any placement mistake in portion 22b installation process, and visual indicia 54 need not be added on the top surface 52 of plug.So
And due to the geometric discontinuity between the top surface 26 of plug 50 and the root 21 of blade 20, it is degrading in air-flow
Aerodynamic flow.
Figure 12 and Figure 13 represents the alternate embodiments of the plug 50 according to the present invention.Plug 50 only includes one in plug
The blind hole 94 at 50 center of top surface 52.The blind hole 94 includes two parts：Appear extreme value portion 95 on top surface 52,
And blind extreme value portion 96.The part 95,96 has cylinder, and appearing extreme value portion 95 has compared with the diameter in blind extreme value portion 96
Bigger diameter.Therefore, the end of removing tool 90 can be wedged in any direction in blind extreme value portion 96.Assuming that plug 50 is right
Claim, decrease placement mistake of the plug 50 in the top 22b of attachment openings 22.Furthermore, it is possible to use simple manufacture mould
Produce this plug.However, due to the geometric discontinuity between the top surface 26 of plug 50 and the root 21 of blade 20,
The aerodynamic flow being degrading in air-flow.
Claims (11)
1. it is used for the plug (50) for preventing that the top (22b) of attachment openings (22) from corroding, including：
Lower surface (51), it includes being used to receive the opening (60) on the head (27) of tension equipment (23),
Top surface (52),
The substantial cylindrical side wall (53) that in axial direction (X) extends between lower surface (51) and top surface (52),
The side wall (53) includes the first side region (66),
It is characterized in that：
Plug (50) is formed by elastic deformation material, and with it is static when diameter (Db), and with bullet can be passed through
Property deformation make the elasticity that the plug blocks and is maintained in the top (22b) of attachment openings (22),
Top surface (52), it includes at least one first blind hole (64,94), and it is shaped such that when plug (50) is by one kind
When causing the spine to appear in the elastic deformation between the top surface (52) of plug (50) and the first side region (66), by described
The elastic deformation of first blind hole (64,94) removes the spine.
2. the plug (50) described in as requested 1, it is characterised in that the first blind hole (64) is included relative to the first side region (66)
Inclined blind extreme value portion (81).
3. as requested 1 to 2 any described plugs (50), it is characterised in that the first blind hole (64) includes appearing extreme value portion
(80), the extreme value portion (80) that appears has slit shape.
4. as requested 1 to 3 any described plugs (50), it is characterised in that top surface (52) includes the second blind hole
(64 '), second blind hole (64 ') and the first blind hole (64,94) are diametrically.
5. the plug (50) described in as requested 1, it is characterised in that the first blind hole (94) is generally positioned at top surface (52)
Center, and appear part (95) including being followed by the cylinder of the blind portion (96) of cylinder, the blind extreme value portion (96) have with
The diameter (D2) for appearing extreme value portion (95) compares bigger diameter (D1).
6. as requested 1 to 5 any described plugs (50), it is characterised in that side wall (53) includes and the plug (50)
A series of vertical circumferential undulations (92) of axial direction (X).
7. sealing system, it includes：
The attachment openings (22) of the root (21) of blade (20), the attachment openings (22) include top (22b),
According to any described plug (50) of claim 1 to 6,
Characterized in that, plug (50) has the outer shape with the basic complementation of top (22b) shape of attachment openings (22), and
And with it is static when diameter (Db) bigger compared with the top (22b) diameter (Ds).
8. sealing system according to claim 7, it is characterised in that the top surface (52) of plug (50) is relative to bottom
Surface (51) tilts so that when plug (50) is placed in the top (22b) of attachment openings (22), the top of plug (50)
Surface (52) is in the geometric continuity of root (21) of blade (20).
9. sealing system according to claim 8, it is characterised in that the top surface (26) of plug (50) includes can root
The visual indicia (54) being placed on plug (50) according to precalculated position in the top (22b) of attachment openings (22).
10. according to any described sealing system of claim 7 to 9, it is characterised in that the sealing system includes tension equipment
(23), the tension equipment includes：
The bar (24) being positioned in the bottom (22a) of attachment openings (22) is intended to,
It is intended to be positioned in the top (22b) of attachment openings (22) and between bottom (22a) and top (22b) by shoulder
(28) head (27) of obstruction,
Manufactured opening (60) has basic with the head (27) of tension equipment (23) in the lower surface (50) of plug (50)
Complementary geometry.
11. one kind includes the blade (20) of the guiding blade of root (21), the blade (20) is characterised by, blade (20)
The root (21) includes the sealing system described in as requested 7 to 10.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1550822 | 2015-02-03 | ||
| FR1550822A FR3032223B1 (en) | 2015-02-03 | 2015-02-03 | ANTI-CORROSION PLUG FOR FILLING A FASTENING ORIFICE AND SYSTEM COMPRISING SAID PLUG |
| PCT/FR2016/050217 WO2016124853A1 (en) | 2015-02-03 | 2016-02-02 | Corrosion protection plug for filling an attachment opening, and system including said plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107407157A true CN107407157A (en) | 2017-11-28 |
| CN107407157B CN107407157B (en) | 2020-04-07 |
Family
ID=53298502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680015484.4A Active CN107407157B (en) | 2015-02-03 | 2016-02-02 | Corrosion-resistant plug for filling an attachment opening, and system comprising said plug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10724388B2 (en) |
| EP (1) | EP3253951B1 (en) |
| CN (1) | CN107407157B (en) |
| FR (1) | FR3032223B1 (en) |
| WO (1) | WO2016124853A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3048448B1 (en) * | 2016-03-02 | 2018-03-30 | Safran Aircraft Engines | SEAL CAP FOR LOW PRESSURE COMPRESSOR DRUM, LOW PRESSURE COMPRESSOR DRUM AND TURBOMACHINE |
| FR3056653B1 (en) * | 2016-09-29 | 2020-01-10 | Safran Aircraft Engines | CUP FOR PROTECTING A FIXING ORIFICE OF A TURBOMACHINE PART, ASSOCIATED PROTECTION SYSTEM |
| US20180149080A1 (en) * | 2016-11-29 | 2018-05-31 | Ford Global Technologies, Llc | Stud-engaging engine cover pocket plug |
| FR3067070B1 (en) * | 2017-06-01 | 2020-01-03 | Safran Aircraft Engines | SYSTEM FOR CUTTING A PLUG CLOSING A FASTENING ORIFICE FOR A BLADE BLADE ASSEMBLY AND ASSOCIATED CUTTING METHOD |
| FR3081187B1 (en) | 2018-05-17 | 2022-05-27 | Safran Aircraft Engines | PROTECTIVE CUP OF A MOUNTING WITHOUT INTERFERENCE |
| FR3082228B1 (en) | 2018-06-08 | 2020-09-11 | Safran Aircraft Engines | TURBOMACHINE PART INCLUDING A WASHER COOPERATING WITH A BLADE |
| US20220373017A1 (en) * | 2019-11-07 | 2022-11-24 | Fresenius Medical Care Deutschland Gmbh | Fall-Proof Component for Screw, Fall-Proof Screw Assembly, Fall-Proof Screw-Nut Assembly and Corresponding Part, Combination Structure and Assembly |
| US20230203765A1 (en) * | 2020-05-08 | 2023-06-29 | Intercrate Container Corp. | Glare screen system |
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| US4696398A (en) * | 1984-10-17 | 1987-09-29 | Steinmetz Jr Floyd | Free drop liquid container with extendable spout |
| US4850778A (en) * | 1988-07-27 | 1989-07-25 | Trw, Inc. | Push-on fastener |
| US20040084454A1 (en) * | 2002-10-30 | 2004-05-06 | Tumlin Ricky W. | Molded aerosol can cap |
| JP2006242339A (en) * | 2005-03-04 | 2006-09-14 | Thk Co Ltd | Bolt hole concealing cap |
| JP2009127729A (en) * | 2007-11-22 | 2009-06-11 | Nsk Ltd | Cap for mounting hole and linear motion guide device equipped with it |
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| US2663451A (en) * | 1951-10-10 | 1953-12-22 | Chandler P Yarnall | Closure plug |
| FR1454953A (en) | 1965-11-29 | 1966-02-11 | Method and device for transferring dough pieces, for example from one machine to another | |
| DE2539551A1 (en) * | 1975-09-05 | 1977-03-10 | Hermann Schmidt | Self locking nut and bolt assembly - employs bolt with additional thread of opposite pitch for locknut |
| US4355729A (en) * | 1981-01-15 | 1982-10-26 | Maguire Daniel J | Single service childproof closure |
| US4620641A (en) * | 1985-12-12 | 1986-11-04 | General Motors Corporation | Access plug for threaded holes in electric starting apparatus |
| US5480273A (en) * | 1994-09-07 | 1996-01-02 | Jou; Yuch-Chiou | Bolt assembly |
| US6293744B1 (en) * | 2000-06-14 | 2001-09-25 | Illinois Tool Works Inc. | Fastener system including a fastener and a cap |
| DE10156876C2 (en) * | 2001-11-20 | 2003-10-16 | Seppelfricke Armaturen Gmbh & | Device for securing a screw element against unauthorized loosening |
| US6964549B2 (en) * | 2002-03-25 | 2005-11-15 | Fallon Phoenix P A | License plate mounting fastener |
| GB0820850D0 (en) * | 2008-11-14 | 2008-12-24 | Domino Printing Sciences Plc | Improvements in or relating to inkjet printing |
| US8333537B2 (en) * | 2009-05-22 | 2012-12-18 | Hutchinson, Sa | Nut looseness indicator and dust cap |
| TWI526633B (en) * | 2013-01-15 | 2016-03-21 | 直得科技股份有限公司 | Bolt-hole cap for bolt hole in linear rail |
-
2015
- 2015-02-03 FR FR1550822A patent/FR3032223B1/en active Active
-
2016
- 2016-02-02 US US15/548,285 patent/US10724388B2/en active Active
- 2016-02-02 WO PCT/FR2016/050217 patent/WO2016124853A1/en active Application Filing
- 2016-02-02 EP EP16707862.5A patent/EP3253951B1/en active Active
- 2016-02-02 CN CN201680015484.4A patent/CN107407157B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696398A (en) * | 1984-10-17 | 1987-09-29 | Steinmetz Jr Floyd | Free drop liquid container with extendable spout |
| US4850778A (en) * | 1988-07-27 | 1989-07-25 | Trw, Inc. | Push-on fastener |
| US20040084454A1 (en) * | 2002-10-30 | 2004-05-06 | Tumlin Ricky W. | Molded aerosol can cap |
| JP2006242339A (en) * | 2005-03-04 | 2006-09-14 | Thk Co Ltd | Bolt hole concealing cap |
| JP2009127729A (en) * | 2007-11-22 | 2009-06-11 | Nsk Ltd | Cap for mounting hole and linear motion guide device equipped with it |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3253951B1 (en) | 2020-10-21 |
| FR3032223B1 (en) | 2017-02-10 |
| CN107407157B (en) | 2020-04-07 |
| US20180023405A1 (en) | 2018-01-25 |
| FR3032223A1 (en) | 2016-08-05 |
| WO2016124853A1 (en) | 2016-08-11 |
| US10724388B2 (en) | 2020-07-28 |
| EP3253951A1 (en) | 2017-12-13 |
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